Automatic air-compressor.



J. ROG-ERS.

AUTOMATIC AIR COMPRESSOR. APPLIoATIoN FILED 001km. 1 908.

Patented Apr. 1,9, 1910.

2 SHEETS-SHEET 1.

ANDREW a GRAHAM CO. Puoroumocwmms. WASMINGTDN. D. a

J. ROGERS. AUTOMATIC AIR GOIlPRESSO-f.`

Wav/Iliad qwibnemo JOHN ROGERS, GF BRIDGEORT, CONNECTICUT.

AUTOMATC AIR-CQMERESSOR.

An lca'tion ed october "i3, 3.908.

To (U whom t may concern:

Be it known that I, JOHN Romans, a citizen o'tl the United States, residing at Bridgeport, county ot Fairfield, State of Connecticut, have invented a new and useful ntomatic Air-Compressor, of which the following is a specification.

This invention relates to the class o't' automatic air compressors illustrated and described in Letters Patent Number 8.3",29l, granted to' me November 1906, and has for its object to simplify, cheapen and to generally improve the construction and operation of the machine and especially to provide means for mechanically opening and closing the eduction valve.

llvith these and other objects in view l have made the changes and imiirovcments in the details otx construction which i will now describe, referring to the accompanying drawings forming a part ot this specification and using reference characters to indicate the several parts.

Figure l is a vertical section of my novel air compressor on the line lv-l in Fig. Q, looking in the direction of the arrows, a port-ion ot' the base at the center being broken out to show the air passage, and certain of the parts being' in elevation, showing the position after the emptying ot the cylinder, the eduction valve being closed and the induction valve open; Fig. 2 a horizontal section on the line 2 2 in Fig. l, looking in the direction of the arrows, the operating mechanism appearing in plan: Fig. 3 an inverted plan view on an enlarged scale of the head at the top of the cylinder with the valve seat and valve removed; Fig. la longitudinal section of the entire head; Fig. 5 a detail sectional view on an enlarged scale ot the central tube, valve and valve stem: Fig. (3 a section of the base on an enlarged scale on the line 6 6 in Fig. Q, looking in the direction oi the arrows, the operative parts being in elevation, the full line position showing the eduction valve closed and the induction valve open and the reverse position ot the parts being indicated by dotted lines; 7 a central section ot the induction valve in the open position, co-rresiionding with Figs. l, 2, 6 and l0; Fig. S a section of the induction valve on the line S-S in Fig. 7, looking in the direction of the arrows, the valve being` in the closed position; Fig. 9 an elevation ot the Specification of Letters Patent.

Patented Apr. 1Q, 1910.

Serial No. TATS.

induction valve in the closed position; Fig. l0 an elevation of the induction valve in the open position; and Fig. ll is an elevation oit' the guide plate detached.

rEhe reservoir of my novel air compressor comprises a base 2O provided with legs 2l upon which it rests, a cylinder' 22 which may be ot glass and a top 23. The base and top are provided with ears 2% through which rods pass by which the parts are held together, packing rings Q6 being interposed between the ends of the cylinder and the base and the top.

27 denotes a connection for an induction pipe (not shown) and 28 a connection for an eduction pipe not shown).

29 denotes a plug which engages a hole in a thickened portion of the side of the base with a drive tit and extends within the reservoir. A passage 30 in alinement with connection 27 and closed at its inner end leads into said plug from its outer end. Concentric with said passage but inthe inner end of the plug is a circular recess 3l which receives induction valve 3Q. rlhis valve is cylindrical and tits the recess closely but is tree to oscillate therein and is provided with a head 33 having arms 34 and 36 and 37 denote respectively upper and lower cap pieces which inclose the inner end ot the plug' and are secured together by screws 3S which also retain a guard 39 which inay or may not be placed over the upper cap piece at a slight distance therefrom and for a purpose that will presently be explained. The lower cap piece is shown as provided with a. lug 40 which rests upon the base and with stop shoulders fil which are adapted to be engaged by arms 34 and to limit the oscillation of the valve in opening and closing. rThe plug and the upperl cap piece are provided with radial openings et? leading :trom passage 30 and the induction 'alve is provided with radial openings let which are adapted to register with the openings in the plug and cap piece. Upper cap piece '36 is provided with an arm e6 which extends in front of the head of the induction valve and retains said valve in place.

et? denotes a guide plate which rests upon the base and is secured to arm 4G by means ot shouldered screw i8 on which the induction valve lever 49 is pivoted. The guide plate is provided with a vertical slot 50 through which the operating lever, indicated by 534.y passes. as will be more t'ully explained, and with a curved slot 51 through which an arm 52, which extends inward troni lever t9 and engages arms and 35, passes.

5l denotes drainage openings in the plug and 53 drainage openings in the induction valve.' The function ot these openings is to drain the valve perfectly and render it impossible for the valve to become. set in use.

54S denotes the eduction valve whose shank .3T is pivoed to the eduction valve lever .38. which in turn pivoted to a standard 5) extending upward t'rom the base.

GO denotes a thimble the upper end ot which serves as a seat tor the eduction valve and which is threaded to engage a hub (El on the bottoni ot' the base which opens ino cduction connection '28.

The eduction valve lever is provided on its under .side with an arm G3, the purpose ot which will presently be explained, and is shown as provided with a counter-weight (32.

Induction valve lever 49 is provided with a weight (tl, having a projection 'formed with faces (35 and (3(3 which are at an obtuse angle to each other and are adapted to alternately engage and bear on the top ol eduction Yalv lever 5S, as will be more fully explained, and with arms 67 and (38 which are engaged by operating lever )wing to the tact that the axis of oscili lation ot the eduction valve lever 58 is above the plane ot' the axis of oscillation otthe induction valve lever 4-9, as best shown in Tfig. (3, the projections (i5 and 6G of the lever 19 act quietly upon the lever 5S when contacting therewith. This is because said projections do not descend trom a considerable elevation above the lever 5S but simply shifts from side to side on the pivot of said lever 58.

6) denotes a central tube which extends upward troni the base and communicates with a passage TO. which in turn communicates with eduction valve connection 2S.

71 denotes an air valve which is adapted to close passage T0 and is provided with a stem T2 which extends upward in the tube and is provided with a head T3 above the top ot the tube. The stem is provided with a longitudinal passage T4 which extends into a transverse opening T5 troni which passages T6 extend to the edge of the valve (see Fig. 5).

Operating standard TT base.

7S denotes an operating rod which pivoted to the long arm ot' the operating lever and extends upward and inward and is provided atv its upper end with an eye 79 lever 53 has its fulcrum on a extending upward trom the which slides freely on the central tube.

on the central tube and is adapted to engage operating rod TS to litt said rod and the long arm ot the operating lever when thc tloat is raised by the intlow of water.

Sl denotes an engaging lever which is pivoted to the base as at 82. This lever is provided with an eye 83 which loosely receives the central tube and with a downwardl y extending arm Sel.

S5, SG and Si' denote pins which extend laterally trom operating lever 53. lVhen the tloat moves downward with the outflow ot water, it engages le Yer S1 which in turn engages pin 85 and transmits the pressure ot the tloat to the long arm ot the operating lever at quite a distance trom the 'fulcruin ot' the operating lever. rlhe purpose is to apply the greatest power to said lever just when it is required, that is at the starting ot' the lifting ot' weight (tel to move said weight from the dotted position in ifig. to the full line position in said ligure to close the eduction valve and open the induction alve, as will be more t'ully explained. An instant later, as the tloat descends, arm S-l ot' the engaging lever will engage pin St extending trem the operating lever and will continue the downward movement of the long arm ot said lever, and an instant later the engaging lever will engage pin 8T upon the operating lever and complete the downward movement ot the long arm ot` the operating lever.

88 denotes a head at the upper end ot the cylinder. This head, tor convenience in construction, is made in three parts, viz: a lower part indicated by S9, an intermediate part indicated by 90, and an upper part in dicated by 91. Part 89 is connected to top L23 and the parts are shown as connected to each other by male and female threads. Within the head are chambers indicated respectively by 99 and 100. Openings 9? lead Jfrom the reservoir into chamber 99, and openings 9G lead trom chamber 92) into chamber 100.

2)?) denotes an air inlet valve in chamber 9S) which engages a valve seat 9st on a hub 102 which opens into an air inlet passage 02.

St? denotes a bacl pressure valve in chamY ber 100, which permits air to pass outward freely through an air pipe connection indicated by 9S but prevents air trom passing balward into the reservoir from a beer lieg.y atoinizer, tanl; or other receptacle into which air may be forced from the reservoir. 1 have shown air valve 9T as provided with a flange 101 which is gripped between parts 90 and 91, said parts being secured together by a nut l03. i

The operation is as follows: YWhen the parts are in the position shown in F G, T and 10, the induction valve is openV and water is passing freely into the reservoir, the

8O denotes a tloatl which also slides freely 1 control ot the water supply being wholly independent ot the present invention, any ordinary water valve in the supply pipe (not shown) meeting the requirements. As the water rises in the reservoir it raises the float, compresses the air in the reservoir and forces it out through the head, air valve 97 and air pipe connection 98, air inlet valve 95 closing and prever-ning escape ot air through air inlet 92. The passage ot' air from the reservoir continues until the tloat causes eye T9 on the operating rod to engage head 73 and open valve T1. As soon as this valve is opened the pressure in the cylinder is relieved and air passes out through the valve stem and passage 70. Simultaneously with the opening otl valve 7l, air valve 97 closes and prevents bach pressure of air through air valve connection 98. It will loe understood ot' course that in Fig. l the tloat is at its lowered position. lVhen the induction valve is open and the float is rising from the position shown in Fig. l, the long arm of operating lever will be moving upward and the short arm ot said lever will be moving downward from the position shown in Fig. (3. As the short arm moves downward, it engages arm (38 ot induction valve lever it9 and swings said lever and weight 64C from t-he full line position in Fig. 6 toward the dotted position in said ligure. As the tloat reaches the extreme ot' its upward movement, lever 49 will have been swung' up to and slightly past the vertical position so that the weight will cause it to drop downward toward the right, as seen in dotted lines in Fig. (5. lVhen the weight drops down, the bearing face G5 on said weight will engage eduction valve lever 58 and will tilt said lever trom the full line position in Fig. 6 to the dotted position, which raises the eduction valve from its seat and causes the reservoir to drain through eduction connection QS. As soon as the tloat commences to descend with the outtlow ot' water, it will engage lever 81 and cause said lever to engage pins S5, Se and 8T on the long arm of the operating lever successively tilting said lever, and at the end ot' the downward movement ot' the tloat the parts will he in the full line position in Fig. t5, which corresponds with Figs. l, 2, T and lO. The instant this movement ot the operating lever commences, it will draw down the operating rod and release the stem T2 of valve Tl, permitting said valve to close which prevents the escape of anv more air from the reservoir. Air inlet valve 95 now opens and air passes into the reservoir through air inlet 92, hub 102 and openings 93 illing the reservoir with air as the water passes out.

rllhe operation of the induction valve will be readilv understood trom Figs. S. 9 and l0. lllhen radial openings sl/-l in the valve are in alinement with radial openings l2 in plug 29 and upper cap piece 3G, as in Fig. l0, water from passage 30 will pass freely through said openings and into the reservoir, 'the streams et water from the openings striking against guard 39, the function ot' which is simply to prevent the water from spurting upward against the walls of the reservoir. rllhe jets ot water, in tact, strike against the guard and the water lows into the reservoir from under the guard. lllhen the reservoir has become tilled, weight t-il on the induction valve lever will throw said lever to the dotted position in Fig. G and will close the induction valve -and open the eduction valve, alreadv eX- plained. 'lhe opening and closing of the induction valve is effected lot7 means of arm which extends from the induction valve lever. )is weight (3lhas dropped to the tull line position in Fig. G, it will have swung arm from the position shown in F ig. 9 to the position shown in Fig. 10, said arm having engaged arrn 34textending from the head ot the induction valve and swung said arm from the position shown in Fig. 9 to the position shown in Fig. l0, therchv opening the valve. rllhe oscillation ot' the valve in either direction is limited loj,7 the engagement ot one ot' the arms with one ot the stop shoulders 4l. As soon as the eduction valve has been opened and the float commences to descend, operating lever 513 will swing trom its position with the short arm depressed toward the position shown in Figs. l and t5. The short arm of the operating lever will now engage arm (37 o't the induction valve lever and will commence to raise said lever and the weight from the dotted position in Fig. G toward and slight-lv past the vertical position. As soon as this position is reached` the weight will swing the induction valve lever to the full line position in Fig. 6, which will open the induction valve in the manner alreadv eX- plained and the hearing tace et on the weight will engage the eduction valve lever and close said valve, the lopening ot the induction valve and the closing of the eduction valve, and vice versa, taking place simultaneously and hoth acts being performed through the action of the induction valve lever and weight Het, which controlled lov operating lever The 'function of arm ($3 which extends from the eduction valve lever is to engage the short arm et the operating lever when it is at its depressed position, corresponding with the dotted position o't` the parts in Fig. 6, lifting 1aressure upon the short arm of the operating lever acting to swing the long arm ot' said lever downward and to positively7 draw down operating rod 7S and the float.

Having thus described my invention, I claim:

l. An air compressor, including in its construction a reservoir having induction and eduction valves. an induction valve lever l carried and which is ada ted to be enga ed provided with a weight and bearing faces, operating connections intermediate said lever and the induction valve, and an eduction valve lever adapted to be engaged by the bearing faces on the induction valve lever to open and close the eduction valve.

2. An air compressor including in its construction a reservoir having induction and eduction valves, an induction valve lever engaging the induction valve and having a weight and a pair of arms and bearing faces, an operating lever extending between the. arms of said pair, and an eduction valve lever which is engaged by the bearing faces on the induction valve lever to open and close the eduction valve.

3. An air compressor comprising a reservoir having induction and eduction valves, an induction valve lever having bearing faces at an obtuse angle to eac-h other, an educt-ion valve lever having its axis of oscillat-ion above that of the induction valve lever and having its upper edge in position to be acted on alternately by the bearing faces of the induction valve lever, and means whereby actuation of th-e induction valve lever will close either valve simultaneously with the opening of the other.

4. An air compressor comprising a reser voir having induction and eduction valves, an induction valve lever having bearing faces at an obtuse angle to each other, an eduction valve lever having its axis of oscillation above that of the induction valve lever and having' its upper edge in position to be acted on alternately by the bearing faces of the induction valve lever, and a float and intermediate connections whereby when the cylinder is filled the induction valve is closed and the eduction valve is opened, and when theI cylinder is emptied the induction valve is opened and the eduction valve is closed.

An air compressor comprising a reservoir having independent induction and eduction valves, an induction valve lever, an eduction valve lever, engaging connections between said levers, an operating lever, an operating rod pivoted thereto, a central tube, an air passage connecting therewith, a valve for closing said passage and having a stem extending the length of the tube and provided with a longitudinal passage and a head above the tube adapted to be engaged by the operating rod and a. float adapted to raise the operating rod and to open and close the induction and eduction valves re- Yweight and projections and an eduction valve lever by which the eduction valve is by the projections on the induction valve lever, of a cent-ral tube, an air passage connecting therewith, a valve adapted to close said passage and having' a stem extending the length of the tube and provided with a longitudinal passage and a head above the tube, an operating lever adapted to engage t-he induction valve lever, an operating' rod pivoted thereto and having an eye sliding over the central tube and a float adapted to engage said eye to raise the valve stem and actuate the operating lever, substantially as described, for the purpose specified.

7. In an air compressor, the combination with induction and eduction valves, an in duction valve lever adapted to engage the induction valve and having a weight and projections and an eduction valve lever by which the eduction valve is carried and which is adapted to be engaged by said pro` jections, of an operating lever adapted to engage the induction valve lever and having pins extending therefrom, an operating rod pivoted to the operating lever, an engaging lever adapted to engage the pins on the operating lever and a. float adapted to engage the operating rod as it rises and to engage the engaging lever as it descends, substantially as described, for the purpose specied.

8. In an air compressor, the combination with induction and eduction valves, an induction valve lever adapted to engage the induction valve and having a weight and projections and an eduction valve lever by which the eduction valve is carried and which is adapted to be engaged by said projections, of an operating lever adapted to engage the induction valve. lever, an operating rod pivoted to the operating lever, a float by which the operating lever and operating rod are controlled and means for relieving the air pressure in the reservoir when filled with water.

9. In an air compressor, the combination with a reservoir, induction and eduction valves, an induction valve lever adapted to engage the induction valve and having a weight and projections, and an eduction valve lever by which the eduction valve is carried and which is adapted to be engaged by said projections, of a tloat and intermediate connections whereby the induction valve lever is oscillated to close either of said valves simultaneously with the opening of the other. y

l0. In an air compressor, the combination with a reservoir, induction and eduction valves, an induction valve lever adapted to engage the induction valve and having a weight and projections, and an eduction valve lever by which the eduction valve is carried and which is adapted to be engaged by said projections, of a float and intermediate connections whereby the induction engage the induction valve and having a weight and projections, and an eduction valve lever by which the eduction valve is carried and which is adapted tobe engaged by said projections, of a float and intermediate connections whereby the induction valve lever is oscillated to close either of said valves simultaneously with the opening of the other, and an air inlet valve which permits air to enter the reservoir when the o water falls therein and prevents the escape of air from the reservoir.

12. In an air compressor, the combination with an induction valve comprising a plug having a passage closed at its inner end, radial openings leading from the passage and a circular recess and a cylindrical valve adapted to oscillate in said recess and having radial openings adapted to register with the openings in the plug, of an induction valve lever adapted to engage the induction valve, an eduction valve, a lever by which the eduction valve is carried and which is engaged by the induction valve lever, a float and intermediate connections whereby the induction valve lever is oscillated to alternately admit water and to drain the reservoir.

13. In an air compressor, the combination with a plug having a passage closed at its inner end, radial openings leading from the passage and a circular recess and upper and lower cap pieces, said upper cap piece having corresponding radial openings, of a cylindrical valve adapted to oscillate in said recess and having radial openings adapted to register with the openings in the plug and upper cap piece, a head and arms extending therefrom, a lever having an arm 52 adapted to engage the arms of the valve and arms 67 and 68 and an operating lever adapted to engage arms 67 and 68.

14. In an air compressor, the combination with an induction valve comprising a plug having a passage, radial openings leading from the passage and a circular recess and a cylindrical valve adapted to oscillate in said recess and having radial openings adapted to register with the openings in the plug, a head and arms extending therefrom, of an induction valve lever having an arm 52 adapted to engage the arms otl the induction valve, a weight and projections, an eduction valve, an eduction valve lever by which the eduction valve is carried and which is adapted to be engaged by the eduction valve lever,

f2s ne) and an operating lever adapted to engage the arms of the valve head, substantially as shown, for the purpose speciiied.

15. In an air compressor, the combination with an induction valve comprising a plug having a passage, radial openings leading from the passage and a circular recess and a cylindrical valve adapted to oscillate in said recess and having radial openings adapted to register with the openings in the plug, a head and arms extending therefrom, of an induction valve lever having an arm 52 adapted to engage the arms of the induction valve, arms 34 and 35, a weight and projections, an eduction valve, an eduction valve lever by which the eduction valve is carried and which is adapted to be engaged by the eduction valve lever, an operating lever adapted to engage arms 34 and 35, a float by which the operating lever is controlled and means controlled by the float for relieving the air pressure in the reservoir when the float has reached the extreme of its upward movement.

1G. In an air compressor of the class deg,

scribed t-he combination with a reservoir, of an oscillatory inlet valve and a flat seating form ot' outlet valve, a lever to which the flat seated valve is hung, a pivotal lever to operate the oscillatory valve and bearing a weight and lug to engage the said valve lever, a third lever and means tor operating the same whereby the weighted lever is thrown to and fro against the valve leverl to open and close the valves.

17. In an air compressor', the combination with a reservoir, of an oscillatory inlet valve and a flat seating outlet valve, a pivoted lever to which said flat seated valve is hung, a vertically disposed lever pivoted to operate theoscillat-ory valve and having an upper weighted end portion adapted to be moved backward and forward in a way to strike the lever for the flat seating valve and to hold the same in an open or closed position, and a float for operating said levers and valves.

1S. In an air compressor of the class described, the combination of an inlet valve comprising a cylindrical body having ports therethrough and an annular recess in its end portion, an oscillatory valve litt-ed in the annular recess having ports to register with those ot the body and bearing depending lugs, a strap upon the body having a stop projecting in between the said lugs to limit the movement of the oscillatory valve, a lever bearing an arm extended intermediate ot' the said lugs, and means for operating' the lever and oscillatory valve to open and close the latter.

19. An inlet valve for an air compressor comprising in part a ported cylindrical body having an annular recess therein, an oscillatory valve mounted in the said recess and lil() having ports to register with those of the member, a guide plate secured to the said body and bearing a pair of lugs, a stop; against which the lugs are designed to strike l arm extended through one of the said slots to limit the movement ot the oscillatory valve, a lever pivoted to engage the said lugs i to operate the valve and having a pair ot extended fingers, a second lever mounted at an angle to the iirst named lever with its end l extended between the said fingers tor the purpose ot operating the lever, and means t'or operating the said second named lever to open and close the valve.

20. ln an air compressor of the Class deseribed, the combination with a reservoir, ot au inlet valve and a flat seating form of outlet valve, a lever to which the tiat seated valve is hung and having a counter-balancing weightl upon its free end, a second lever tor operating the inlet valve, a third lever arranged at a right angle to the first g named lever adapted to operate the same, and a float with suitable connections for opwhen the said float is in its extreme uppei l position to allow an escape ot air in the upl per portion of the reservoir through tl1e`y stand pipe to the outlet, and levers Connected i with the float to oseillate the inlet valve and to raise and lower the outlet valve.

22e In an air compressor, the combination l with a reservoir. of an inlet valve comprisL ing in part an oscillatory Controlling valve valve body having slots therein, a lever pivotall.,v connected to the plate and bearing an for engaging the oscillatory valve member to operate the same by the movement ot the said lever, an outlet valve, and a lever for operating the outlet valve, and a float` lever movably mounted in the second slot ot said plate to engage and operate both ot the valve levers.

23. ln an air eompressor, the combination with a reservoir, ot an inlet valve, comprising in part a fixed and movable member, a strap secured to the tixed member and bearing a bracket, a plate secured to the said bracket, a lever pivoted to the said plate and connected to operate the valve, an outlet valve, a lever tor operating the same, a third lever tor operating both the lever for the inlet and the outlet valve, and a tloat -for manipulating the said third lever.

24T. An air compressor Comprising a reservoir, a stand pipe secured to the bottom part thereof and extended through to the upper portion provided with a valve seat and having an outlet therefrom, a second pipe loosely mounted in the stand pipe and 'forming a release, valve at its lower end to close the seat and having ports through the lower end portion. a tloat mounted upon the stand pipe adapted to engage the inner pipe when in an extreme upper position to open and close the release valve to relieve the pressure in the reservoir.

ln testimony whereof l ailix my signature. in presence of two witnesses.

JOHN ROGERS.

Witnesses A. M. Vioos'rnn, S. lV. A'riinn'rox. 

